A new knowledge base article has been published on our support portal.
In some situations you may need a CRM Action to return parameter and to implement the parameter values into a formula. Below is an example of how this can be be implemented.
We have a variable SaleTaxRate defined in a Process Action which can be called by multiple entities when needed. We require this to be integrated into a North52 formula to calculate the tax rate and consequent total amount for the estimated value in an Opportunity.